EP 4202195 A1 20230628 - AIRCRAFT OPERATION
Title (en)
AIRCRAFT OPERATION
Title (de)
FLUGZEUGBETRIEB
Title (fr)
FONCTIONNEMENT D'AÉRONEF
Publication
Application
Priority
GB 202118650 A 20211221
Abstract (en)
A gas turbine engine of an aircraft forms part of a propulsion system, and comprises: a combustor arranged to combust the fuel and having an exit, and wherein a combustor exit temperature - T40 - is defined as an average temperature of flow at the combustor exit and a combustor exit pressure - P40 - is defined as the total pressure there; a turbine comprising a rotor having a leading edge and a trailing edge, and wherein a turbine rotor entry temperature - T41 - is defined as an average temperature of flow at the leading edge of the rotor of the turbine and a turbine rotor entry pressure - P41 - is defined as the total pressure there; and a compressor having an exit, wherein a compressor exit temperature - T30 - is defined as an average temperature of flow at the exit from the compressor at cruise conditions and a compressor exit pressure - P30 - is defined as the total pressure there (all at cruise conditions). A method of determining at least one fuel characteristic of a fuel provided to the gas turbine engine comprises changing a fuel supplied to the gas turbine engine; and determining the at least one fuel characteristic of the fuel based on a change in a relationship between T30 or P30 and one of T40 and T41, or of P40 and P41, respectively.
IPC 8 full level
F02C 3/20 (2006.01); F01D 21/00 (2006.01); F02C 9/28 (2006.01); F02C 9/40 (2006.01)
CPC (source: EP GB US)
F01D 17/00 (2013.01 - EP); F01D 17/162 (2013.01 - EP); F02C 3/20 (2013.01 - EP GB); F02C 9/28 (2013.01 - EP GB US); F02C 9/40 (2013.01 - EP GB); F04D 29/563 (2013.01 - EP); F23N 3/002 (2013.01 - EP); F23N 3/06 (2013.01 - EP); F23N 5/022 (2013.01 - EP); F23R 3/26 (2013.01 - EP); F23R 3/36 (2013.01 - EP); F01D 21/003 (2013.01 - EP); F05D 2220/323 (2013.01 - US); F05D 2240/35 (2013.01 - US); F05D 2250/51 (2013.01 - EP); F05D 2260/80 (2013.01 - EP); F05D 2270/3013 (2013.01 - US); F05D 2270/303 (2013.01 - US); F05D 2270/309 (2013.01 - US); F23N 2221/10 (2020.01 - EP); F23N 2225/20 (2020.01 - EP); F23N 2225/21 (2020.01 - EP)
Citation (search report)
- [XI] US 2009064682 A1 20090312 - HEALY TIMOTHY ANDREW [US], et al
- [XI] US 2015315978 A1 20151105 - DAVIES GARETH HUW [GB], et al
- [XI] EP 2333280 B1 20171101 - GEN ELECTRIC [US]
- [XI] US 2015354466 A1 20151210 - HIGASHI RYO [JP], et al
- [XI] US 2018142627 A1 20180524 - HARPER JAMES [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4202195 A1 20230628; AU 2022279461 A1 20230706; GB 2617309 A 20231011; US 11859565 B2 20240102; US 2023193837 A1 20230622; US 2024117771 A1 20240411
DOCDB simple family (application)
EP 22209108 A 20221123; AU 2022279461 A 20221130; GB 202118650 A 20211221; US 202217853333 A 20220629; US 202318212290 A 20230621